Table 3.
Echocardiographic parameters by quartiles of Mechanical Dyssynchrony
| All | Dyssynchrony as assessed by SD T2P LS in the 4CH view T2P quartiles
|
|||||
|---|---|---|---|---|---|---|
| n=424 | Quartile 1 n=106 | Quartile 2 n=109 | Quartile 3 n=103 | Quartile 4 n=106 | P for trend | |
|
| ||||||
| T2P (ms) | 59.0 [39.5, 88.5] | <39.5 | 39.5–59.0 | 59.1–88.5 | >88.5 | |
| LVEDV (mL) | 98.5 ± 35.1 | 93.0 ± 28.8 | 95.5 ± 35.5 | 101.6 ± 35.1 | 104.1 ± 39.5 | 0.009 |
| LVEDD (cm) | 4.8 ± 0.6 | 4.7 ± 0.6 | 4.7 ± 0.6 | 4.8 ± 0.5 | 4.9 ± 0.7 | 0.011 |
| Mean wall thickness (cm) | 1.2 ± 0.2 | 1.1 ± 0.2 | 1.1 ± 0.2 | 1.2 ± 0.2 | 1.2 ± 0.3 | <0.001 |
| LV mass (g) | 215.4 ± 68.2 | 194.4 ± 56.9 | 202.6 ± 64.0 | 223.5 ± 65.7 | 241.9 ± 75.5 | <0.001 |
| TDI E′ (septal) (cm/s) | 5.9 ± 2.0 | 6.6 ± 2.0 | 6.3 ± 2.1 | 5.6 ± 2.1 | 5.1 ± 1.7 | <0.001 |
| TDI E′ (lateral) (cm/s) | 8.1 ± 3.1 | 8.7 ± 2.8 | 8.5 ± 3.6 | 7.5 ± 2.8 | 7.6 ± 3.0 | 0.005 |
| LAV (mL) | 60.7 ± 27.4 | 58.0 ± 20.4 | 61.9 ± 35.2 | 59.9 ± 20.5 | 63.0 ± 29.9 | 0.28 |
| E/E′ (septal) | 15.9 ± 6.9 | 13.6 ± 5.8 | 15.5 ± 6.3 | 16.8 ± 7.1 | 17.9 ± 7.6 | <0.001 |
| E/E′ (lateral) | 11.8 ± 5.9 | 10.1 ± 4.8 | 12.2 ± 6.0 | 12.5 ± 6.3 | 12.3 ± 6.4 | 0.023 |
| LVEF (%) | 59.9 ± 8.1 | 62.3 ± 5.7 | 60.6 ± 7.0 | 59.7 ± 8.0 | 57.0 ± 10.1 | <0.001 |
| GLS (%) | −15.6 ± 3.5 | −17.1 ± 2.8 | −15.5 ± 3.4 | −15.6 ± 3.5 | −14.1 ± 3.6 | <0.001 |